Intuitive APIs designed for ease of integration
We understand that integration time and cost are a huge concern when selecting a new API provider.
That’s why our Esendex APIs have been built with a flexible architecture that’s scalable and takes less time than the market average to integrate.
Trusted by 46,000 customers to deliver world class mobile messaging services
Quick and easy
integration
Feel confident sending and receiving thousands of messages with a provider that looks out for you – and your customers.
End-to-end data and
security protection
Your data is in safe hands with our ISO 27001 accreditation and the most secure communication protocols.
Industry leading
support
As a global provider with 24/7 in-country support, we’re dedicated to helping our customers to transform their business with our out-of-the-box and tailored solutions.
Our channels
SMS API
Easily send and receive text messages to any country in seconds and at scale.
WhatsApp API
Interactive, conversational messaging on WhatsApp via API.
RCS API
Deploy rich media to help your messages stand out from the crowd.
Email API
Send, receive and track emails easily, while managing communication channels securely.
Built by developers, for developers. Integrate our APIs for simple, real-time communication
Use our API documentation to integrate Esendex services into your systems within minutes. Here’s how to send an SMS:
// The POST v1/messages endpoint allows you to send a message to a single contact in one request.
// The message can also be sent via different channels; including SMS, WhatsApp and RCS.
{
"accountReference" : "EXUK0000",
"name": "name",
"characterSet": "GSM",
"channel": "SMS",
"from": "71460491",
"validity": "2025-07-19T09:07:12.190Z",
"messageType": "MarketingAndResearch",
"body": {
"text": "example",
"templateId": ""
},
"recipients": [
{
"msisdn": "+4470000000000",
"variables": {
},
"metaData": {
}
}
],
"metaData": {
"zsuvhhn": "niqloaf",
"xljgmvj": "akwenax"
}
}No commitment, 30 day free trial
Begin your journey by opening a free Esendex account today and get 25 SMS credits.
Ready? Set? Go!
Learn how to get your service up and running with our simple quickstart guides.
Use cases built on our messaging APIs
Customer service
Connect your customer service systems to multichannel messaging to deliver real-time updates and replies. Use our API to trigger outbound messages, route inbound conversations and maintain a consistent support experience across all touchpoints. It keeps everything fast, reliable and fully integrated into your workflow.
Two-way messaging
Build two-way messaging into your products and processes using our API. Capture replies using webhooks, automate common responses and hand off conversations to your support team when needed. You control your customer communication without losing that personal touch.
Authentication (OTP)
Protect logins, account changes and transactions with one-time passwords sent through SMS, WhatsApp and RCS. The API is optimised for speed, deliverability and scale, making it easy to add secure verification to your product without slowing things down.
“We’ve seen a big uptick in our numbers, but more importantly, we’re also providing better services and tools to our customers.”
Gareth Hall – Senior Collections Manager, Debt Managers
For connected communication across all touchpoints
Messaging Platform
Access the feature-rich channels customers choose.
API
Fast and easy so you can set-up and send in seconds.
Reseller
Deliver more customer value and grow lucrative new revenue streams.